1999ApJ...516L..29M

Spatially resolved profiles of the Hα and [N II] λ6584 emission lines have been obtained, with the Manchester Echelle Spectrometer on the San Pedro Martir telescope, across the 7'-long nebulous lobe projecting to the east of P Cygni. The kinematics of this giant lobe indicate convincingly that it is a consequence of a highly asymmetric ejection from this volatile star. There is some evidence that the lobe is the northern wall of a hollow, outflowing cavity, but this suggestion needs to be investigated further. A more intriguing possibility is that it is the manifestation of an outflowing ``funnel'' of gas from P Cygni.